GL1100 Exhaust Crosspipe


Information and questions on GL1100 Goldwings (1980-1983)
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PRACTIKALGUY
Posts: 70
Joined: Mon May 13, 2013 12:45 am
Location: MADISON, WI
Motorcycle: 1983 GL1100A Aspencade

GL1100 Exhaust Crosspipe

Postby PRACTIKALGUY » Tue Feb 11, 2014 7:28 pm



Has anyone ever simply cut out the crosspipe when it's messed up and capped the ports? I'm cutting it out and replacing it with flexpipe, but, if that doesn't work, I may just go 2into1 x2. I've "heard" you can do this...any thoughts or experiences?



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newday777
Posts: 505
Joined: Tue Jan 11, 2011 5:21 pm
Location: Milford NH and Oceanside, CA (N San Diego)
Motorcycle: 2008 Cabernet Red. Level 4

1983 GL1100A Wineberry to sell 36,000 miles

1999A Restored and sold at 19,000 miles

1999SE Totaled by cager at 105,000 miles

Re: GL1100 Exhaust Crosspipe

Postby newday777 » Wed Feb 12, 2014 8:13 am

People have cut the crossover and capped. I don't know what the results were other than the future owners have usually had complaints about the bike not running properly for one reason or another.
Why a flex pipe? Is your crossover pipe rotten? The rest of the mufflers won't be far behind, they rot from the inside out and caused by starting for short periods in cold weather and not running until the bike is good and hot to burn out any moisture in the pipes, usually will take riding for 20 miles or running the bike at least until the fans kick on and off a couple times if working on it in the winter/spring seasons.
This happens on car exhaust systems too.

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newday777
Posts: 505
Joined: Tue Jan 11, 2011 5:21 pm
Location: Milford NH and Oceanside, CA (N San Diego)
Motorcycle: 2008 Cabernet Red. Level 4

1983 GL1100A Wineberry to sell 36,000 miles

1999A Restored and sold at 19,000 miles

1999SE Totaled by cager at 105,000 miles

Re: GL1100 Exhaust Crosspipe

Postby newday777 » Wed Feb 12, 2014 8:21 am

There are posts on cutting the mufflers off that have rotted and using HD take offs (free to $40-$60) and making a couple bent/cut and welded connector pipes. Be sure and inspect the headers at the weld points for rot.

If thinking of buying Mac exhaust system, be aware that there are posts on them rusting fast, poor chrome and bluing of the headers.

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eklimek
Posts: 307
Joined: Tue Feb 15, 2011 1:55 pm
Location: St Catharines Ontario Canada
Motorcycle: 81 GL1100 (Widowmaker not in service), 83GL1100, CB350f x 6, CB400f x2, CB550f sold, CL350 (seized engine), plus enough donors to take me through retirement.

Re: GL1100 Exhaust Crosspipe

Postby eklimek » Thu Feb 13, 2014 6:25 pm

There was no noticeable effect on replacing the OEM exhaust with Harley mufflers. No need to change jets or effect on plugs. You would need more sophisticated testing to detect the difference.
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PRACTIKALGUY
Posts: 70
Joined: Mon May 13, 2013 12:45 am
Location: MADISON, WI
Motorcycle: 1983 GL1100A Aspencade

Re: GL1100 Exhaust Crosspipe

Postby PRACTIKALGUY » Fri Feb 14, 2014 1:23 pm

Nothing is rotten. The crosspipe is simply quite bent up. Flexpipe seems like the simplest solution.

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David-Mantle
Posts: 87
Joined: Thu Aug 08, 2013 2:33 pm
Location: Grimsby , England - United Kingdom
Motorcycle: 1983 GL1100AD
1980 CB400N

Re: GL1100 Exhaust Crosspipe

Postby David-Mantle » Sun Feb 16, 2014 7:09 am

PRACTIKALGUY wrote:Nothing is rotten. The crosspipe is simply quite bent up. Flexpipe seems like the simplest solution.


The cross pipe is only used to balance the power pulses within the exhaust stroke cycle. Gives slightly better scavenging and I agree with you - flexi hose would be the simplest and easiest solution.
The only silly question is the one you don`t ask. Everything else is game.

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PRACTIKALGUY
Posts: 70
Joined: Mon May 13, 2013 12:45 am
Location: MADISON, WI
Motorcycle: 1983 GL1100A Aspencade

Re: GL1100 Exhaust Crosspipe

Postby PRACTIKALGUY » Thu Mar 20, 2014 12:19 pm

I got the flexpipe in there and, with a bit of adjustment on the clamps so the centerstand would lift properly, it seems to working great!




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